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1. (WO2018105570) DEFECT-REDUCED GRAPHENE CARBON MATERIAL AND PRODUCTION METHOD THEREFOR

Pub. No.:    WO/2018/105570    International Application No.:    PCT/JP2017/043528
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Tue Dec 05 00:59:59 CET 2017
IPC: C01B 32/192
Applicants: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
国立大学法人北海道大学
Inventors: MUKAI Shin
向井 紳
OGINO Isao
荻野 勲
IWAMURA Shinichiroh
岩村 振一郎
FUKAZAWA Go
深澤 剛
Title: DEFECT-REDUCED GRAPHENE CARBON MATERIAL AND PRODUCTION METHOD THEREFOR
Abstract:
The present invention pertains to a graphene carbon material having a BET specific surface area of 50 m2g-1 or more, a mesopore volume of 0.05 cm3g-1 or more, and a defect density of 2.5 × 1011 cm-2 or less. The C/O atomic ratio is, for example, within the range of 10-15000. The present invention pertains to a method for producing a defect-reduced graphene carbon material, the method comprising (1) a step for reducing the bulk density of oxidized graphene (e.g., to a bulk density of not less than 0.001 gcm-3 but less than 0.08 gcm-3), and (2) a step for subjecting the low-bulk-density oxidized graphene obtained in step (1) to a microwave irradiation process to obtain a graphene carbon material having a reduced defect density. The present invention provides a graphene carbon material having a relatively large mesopore volume, a relatively large specific surface area, and a reduced defect density, and provides a production method for the graphene carbon material.